NHSDigital/ftrs-directory-of-services
Apr 2025 – Dec 2025
5 Months active
Languages Used
MarkdownPythonSQLYAML
Technical Skills
AWS S3CI/CDCloud ComputingData EngineeringData MigrationPandas
mark-spiers1
PROFILE
Mark-spiers1
Mark Spiers developed and enhanced data migration, modeling, and search features for the NHSDigital/ftrs-directory-of-services repository over five months. He engineered pipelines to ingest and transform healthcare service data from both local and AWS S3 sources, leveraging Python, Pandas, and SQLAlchemy for robust ETL and data modeling. Mark refactored domain models to use strongly-typed enums, improving data integrity and maintainability, and implemented dynamic routing logic for symptom discriminators. He also introduced a local OpenSearch index to migrate data from DynamoDB, enabling faster, scalable search. His work demonstrated depth in backend development, cloud integration, and test-driven engineering practices.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
8Total
Bugs
0
Commits
8
Features
7
Lines of code
5,636
Activity Months5
Your Network
213 peopleWork History
December 2025
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 – NHSDigital/ftrs-directory-of-services. This month delivered OpenSearch-based data migration and search enhancement by implementing a local OpenSearch index to migrate data from DynamoDB, enabling faster data retrieval and enhanced search capabilities. This work lays the foundation for scalable search, improved data accessibility, and better user discovery within the directory service.
1 Commits • 1 Features
Dec 1, 2025Month: 2025-12 – NHSDigital/ftrs-directory-of-services. This month delivered OpenSearch-based data migration and search enhancement by implementing a local OpenSearch index to migrate data from DynamoDB, enabling faster data retrieval and enhanced search capabilities. This work lays the foundation for scalable search, improved data accessibility, and better user discovery within the directory service.
December 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for NHSDigital/ftrs-directory-of-services: Delivered the Symptom Discriminator Source Routing feature with dynamic source assignment for symptom discriminators based on their ID, routing to PATHWAYS or SERVICE_FINDER within a defined upper limit. Implemented tests validating conditional source assignment to ensure reliable routing decisions and catch regressions. The change aligns with the FDOS-562 effort (commit 364b59cf2ac07de0f82ba5cdb62de03c162150bc, "Set source for symptom discriminators (#372)").
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for NHSDigital/ftrs-directory-of-services: Delivered the Symptom Discriminator Source Routing feature with dynamic source assignment for symptom discriminators based on their ID, routing to PATHWAYS or SERVICE_FINDER within a defined upper limit. Implemented tests validating conditional source assignment to ensure reliable routing decisions and catch regressions. The change aligns with the FDOS-562 effort (commit 364b59cf2ac07de0f82ba5cdb62de03c162150bc, "Set source for symptom discriminators (#372)").
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for NHSDigital/ftrs-directory-of-services focused on aligning domain models with strongly-typed enum values to improve data integrity, mapping accuracy, and long-term maintainability. The primary deliverable was a String Enum Refactor for Data Models and Endpoint Mapping, with corresponding updates to tests and mappings.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for NHSDigital/ftrs-directory-of-services focused on aligning domain models with strongly-typed enum values to improve data integrity, mapping accuracy, and long-term maintainability. The primary deliverable was a String Enum Refactor for Data Models and Endpoint Mapping, with corresponding updates to tests and mappings.
June 2025
May 2025
3 Commits • 3 Features
May 1, 2025May 2025 monthly summary for NHSDigital/ftrs-directory-of-services: Delivered three end-to-end data-model and ETL enhancements to improve service contact management, location data accuracy, and opening-time representation. These enhancements enable richer service profiles, improved discovery and planning, and more reliable availability for users.
May 2025
3 Commits • 3 Features
May 1, 2025May 2025 monthly summary for NHSDigital/ftrs-directory-of-services: Delivered three end-to-end data-model and ETL enhancements to improve service contact management, location data accuracy, and opening-time representation. These enhancements enable richer service profiles, improved discovery and planning, and more reliable availability for users.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for NHSDigital/ftrs-directory-of-services focusing on Data Migration Pipeline enhancements to ingest data from S3 URIs, expanding cloud data source support, and improving path handling, tests, and docs. Delivered key feature and supporting work across testing and documentation, driving cloud-ready data ingestion and operational efficiency.
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for NHSDigital/ftrs-directory-of-services focusing on Data Migration Pipeline enhancements to ingest data from S3 URIs, expanding cloud data source support, and improving path handling, tests, and docs. Delivered key feature and supporting work across testing and documentation, driving cloud-ready data ingestion and operational efficiency.
April 2025
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Quality Metrics
Correctness90.0%
Maintainability86.2%
Architecture83.8%
Performance76.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
MarkdownPythonSQLYAML
Technical Skills
API DevelopmentAWSAWS Lambda PowertoolsAWS S3Backend DevelopmentCI/CDCloud ComputingData EngineeringData MigrationData ModelingDatabase ManagementDockerDynamoDBETLEnum Implementation
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline